From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: by sourceware.org (Postfix, from userid 48) id 0FF1F3851C0B; Fri, 19 Feb 2021 01:41:14 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org 0FF1F3851C0B From: "pc at us dot ibm.com" To: gcc-bugs@gcc.gnu.org Subject: [Bug debug/98875] DWARF5 as default causes perf probe to hang Date: Fri, 19 Feb 2021 01:41:13 +0000 X-Bugzilla-Reason: CC X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: gcc X-Bugzilla-Component: debug X-Bugzilla-Version: 11.0 X-Bugzilla-Keywords: X-Bugzilla-Severity: normal X-Bugzilla-Who: pc at us dot ibm.com X-Bugzilla-Status: UNCONFIRMED X-Bugzilla-Resolution: X-Bugzilla-Priority: P3 X-Bugzilla-Assigned-To: unassigned at gcc dot gnu.org X-Bugzilla-Target-Milestone: --- X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: Message-ID: In-Reply-To: References: Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-Bugzilla-URL: http://gcc.gnu.org/bugzilla/ Auto-Submitted: auto-generated MIME-Version: 1.0 X-BeenThere: gcc-bugs@gcc.gnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Gcc-bugs mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 19 Feb 2021 01:41:14 -0000 https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D98875 --- Comment #3 from Paul Clarke --- The IBM Advance Toolchain supports SLES 15, where the latest version of lib= dw is 0.168. We'll work around the issue by reverting the commit for the versi= on of GCC included with the Advance Toolchain. I didn't see any update to the GCC documentation regarding the disruptive nature of the change causing the problem other than "[DWARF] Version 5 requ= ires GDB 8.0 or higher". Should there be something about libdw as well? Anything else?=